1 /* 2 * E-AC-3 encoder 3 * Copyright (c) 2011 Justin Ruggles <justin.ruggles@gmail.com> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 /** 23 * @file 24 * E-AC-3 encoder 25 */ 26 27 #ifndef AVCODEC_EAC3ENC_H 28 #define AVCODEC_EAC3ENC_H 29 30 #include "ac3enc.h" 31 32 /** 33 * Initialize E-AC-3 exponent tables. 34 */ 35 void ff_eac3_exponent_init(void); 36 37 /** 38 * Determine frame exponent strategy use and indices. 39 */ 40 void ff_eac3_get_frame_exp_strategy(AC3EncodeContext *s); 41 42 /** 43 * Set coupling states. 44 * This determines whether certain flags must be written to the bitstream or 45 * whether they will be implicitly already known by the decoder. 46 */ 47 void ff_eac3_set_cpl_states(AC3EncodeContext *s); 48 49 /** 50 * Write the E-AC-3 frame header to the output bitstream. 51 */ 52 void ff_eac3_output_frame_header(AC3EncodeContext *s); 53 54 #endif /* AVCODEC_EAC3ENC_H */ 55